Pump.



M. T. & M. C. CHAPMAN.

. PUMP.

APPLlcAmN FILED ccT. 26. 1910. RENEwED DEC. 9, |915.

Patented J an. 11, 1916.

mm Hh.

VII, i [1] MATTHEW T. CHAPMAN AND MARK C. CHAPMAN, OF AURORA, ILLINOIS, ASSIGNORS T0 AMERICAN WEI-L WORKS, 0F AURORA, ILLINOIS, A CORPORATION OF ILLINOIS.

PUMP.

. Specification ofI Letters Patent.

Patented Jan. 11, 1916.

Application led October-26, 1910,1Serig1 No. 589,216. Renewed yIlecember 9, 1915. ISerial No. 66,021.

United States, residing at Aurora, in the county of Kane and State of Illinoisfhave invented certain new anduseful Improvements in Pumps, of which the following is a specilication, reference being had to the accompanying' drawings.

Oui-invention relates to deep-well pumps, and comprises certain improvements in pumps of the character shown and described in Letters Patent to Robert E. L. Holmes, No. 990,359, dated April 25, 1911, and the application of Matthew T. Chapman, Seria No. 426,556, filed April 11, 1908. The o'bjects'of our invention are to provide certain improvements by which the danger of splitting thepump cylinder by the .pressure of the water or an accidental blow from the pump rods, or any weight that may be let down suddenly, may be avoided; to increase the capacity of the pump without increasing the diameter of the well-tube; t0 provide a construction by which the removal of the pump cylinder from the well-tube is facilitated; and to cheapen the cost of pumps of this character. IVe accomplish these objects as illustrated in the drawings'and as hereinafter described.

What we regard as new is s et forth in the claims. l

In the accompanying drawings,-Figure 1 is a vertical section of a part of a Well-tube showing the pump cylinder, the foundation which supports the same, the lower check valve, and also part of the pump-rod; Fig. 2

is a vertical section of the pump cylinder showing the piston, check valves, and pumprod; Fig. 3 is an enlarged elevation of the foundation which supports the pump cylinder; and Fig. 4 is a. cross-section on line 1 -4 of Fig. 1.

Referring to the drawings,-5 indicates the well-tube, which forms the lining of the well and conducts the water from the pump .cylinder to the outlet.

6 indicates-the pump cylinder, which is a cylinder preferablyof brass and is of somewhat greater length than the stroke of the piston. rlhe pump cylinder is adapted to be litted in the well-tube, being of an external which is conical at its upper end, as shown at 9 in Fig. 1, and is provided with a series of longitudinal slots l() at its lower end portlon, as shown. rlhe conical upper portion .9 of the tube 8 is adapted to receive the lower endportion of the packing 7, whichV fits snugly therein andis wedged tightly between the lower end of the pump cylinder and the upper end portion of the tube 8, into which the pump cylinderl projects, as

shown. 'lhus a tight joint is made not only between the pump cylinder and the tube 8, but also between said parts and' the. welll tube. The tube 8, which forms a part of theA foundation which supports the pump cylinder, is secured in position by means of wedges 11 which fit between the funnell shaped portion 9 of said tube and the well-v tube and are themselves carried byjla collar 12 having atits upper margin an internally. r

projecting flange 13. The wedges 11 are provided at their lower ends with flanges 14 whichl interlock with the flange 13, as

best shown in Fig. 1,.

15 indicatesl screws which are carried by the collar 12 and project inwardly a short distance through the slots 10, but terminate `short of the center of the tube S so as to leave a free central passage therethrough. g

Obviously, when the collar l2 is litted upon the tube 8, the wedges 11 are held in position thereon, but by removing said collar from said. tube the wedges may be readily removed. v

16 indicates a collar screwed upon the lower end of the tube 8, and 17 indicates a spring between the collars 2 and 16 for normally holding said co1 ar, with the wedges carried thereby, up in operative position.

The construction of the collar 12 and the ywedges and the spring-support therefor, as shown herein, is similar to the construction shown in Letters Patent No. 677,438, granted to us July 2, 1901, but differs therefrom in that in our present construction we proe struction of said piston is best shown and described in the Holmes patent hereinbefore referred to and need not therefore be de` scribed again here, as it will suffice toI say that the upper portion 18L of the pump-rod connects with the lower portion 6b `of the pump cylinder through 'passages 22 in the piston, and that the lower portion 18b of the pump-rod connects with the upper portion 6a of the pump cylinder by passages extend-- ing through'the piston and normally closed at their upper end by a check-valve 23 spring-pressed upon its seat4 by a spring 24,-the arrangement being such that when the piston moves down the water flows up through passages 22 into the upper portion 18a of thepump-rod, thence passing out into the well-tube through check-valve 20.- At the same time water rises through the lower portion 18b of the p-iston-rodand the passages in the piston 21 andis discharged into the upper portionv GfL of the/pump cylinder kafter passing under check-valve 23.

25;-26 indicate lower-and upperl checkvalves fitted, respectively, in the lower and upper end portions of the pump cylinder,

' as shown in Fig. 2. '.llhev lower check-valve 25 is seated upon a shoulder 27 provided in the lower portion of the pump cylinder, being provided at its lower portion with a tapered disk 28, preferably of brass, which lits snugly .upon said seat. y

29 indicates packing disks or cups for preventing leakage around the checkvalve 25.

30 indicates a vertically-movable disk, which is seated at the upper portion ofthe check-valve 25 and is spring-pressed upon its seat so as to prevent the downward flow of Water from the lower portion 6b of the pump cylinder. l

The upper check-valve 26 is similar in many respects to the lower check-valve 25, but differs therefrom in that it is provided with a shoulder or radial flange 31 which is of greater diameter than `the balance of the check-valve and rests upon the upper end of the pump cylinder, as shownin Fig. 2.

' 32 indicates a spring-pressed disk which nieves@ prevents downwardlflow of water through" the valve 26.

ft will be apparent from .ward through Ithe lower check-valve intothe lower portion 6b of the pump cylinder and -also will be lifted from the upper portion 6a of the pump cylinder through check-valve 26 into the well-tube. Consequently, when the piston21 is reciprocated, water will be lifted on both the upward and downward strokes, thereby giving a continuous flow of water in the well.

By the construction described, we make it unnecessary to extend the pump cylinder to the top of the well, ashas heretofore been the usual practice, thereby making a large saving in the cost of installation. We also make it possible to employ a much larger 'pump' cylinder in proportion to the size of the well-tube. This will be apparent when it is considered that where the pump cylinder extends to the top of the Well it is impracticable to use a cylinder of more'than six inches in external diameter in an eight inch well-tube, thus making the internal diameter of the cylinder only live and'threequarters inches; whereas with our present construction we lcan use a pump cylinder having seven and one-half inches external thev foregoing that when the upper check-valve is in posi-y When the.

diameter in an eight-inch well-tubeQ-thereby t nearly doubling the capacity of the well.

When it is desired to remove the pump cylinder,-the pump-rod is drawn out, carrying with it the check valves 25-26 and piston 21; then, if the pump cylinder has not become tightly wedgedl in place by sand, gravel or other matter packing between it and the well-tube, it may be removed by insorting a tool which will engage its lower end and lift it out of the well. If, however, it has become tightly cemented in place, it may be removed by slitting it longitudinally or cutting out a longitudinal chip, thereby permitting it to collapse. rlhe foundation which supports the pump cylinder may also be removed by inserting an expanding tool which will engage its lower end and lift it, thereby releasing the wedges 11 from the wedging effect of the funnelshaped portion 9 and permitting them to disengage the well-tube. The foundation is `inserted in the well by means of a tool which' engages the inwardly-projecting ends of the screws 15 and presses `down upon them, thereby leaving the wedgesy free to move down into the well-tube at the desired point.

llf desired, the upper portion of the pump cylinder may be provided with a shoulder 33 to further support the check-valve 26, as

shown in Fig. 1, but ordinarily that is unnecessary.

That which we claim as our invention, and desire to secure by Letters Patent, is, i 1. In combination, a well-tube, a pumpcylinder therein, and means supporting said cylinder at any desired point along said well-tube, comprising a collar,.wedgemem bers secured to said collar and spaced circuinfeientially of the collar in the well-tube, yielding means tending to hold said collar in operative i'aised position for causing the wedges to grip the well-tube forsupporting the cylinder, and three or more pins extending inward from said collar adapted to be engaged from the interior of the cylinder for forcing said collar evenly up or down relative to said well-tube Abut adapted to permit the passage of a water-supply pipe through said collar.

2. In combination, a well tube, a pump cylinder therein, means for supporting said cylinder in said well tube, and a pump-rod extending through said cylinder and below said supporting means, said supporting means' comprising a tube flared at its upper end portion, a wedge between said llared portion and the well tube, a spring mounted on said tube tending to hold said wedge in operative wedging position, and means connected with said wedge and extending into said tube close to said pump-rod adapted to be engaged from above for 'loosening said wedge in said well tube.

3. In combination, a well tube, a pump cylinder therein, means for supporting said cylinder in said well tube, and a pump-rod extending through said cylinder and below said supporting means, said supporting means comprising a tube flared at its upper end portion, a wedge between said flared portion and the well tube, ay spring mounted on said tube tending to hold said wedge in operative wcdging position, and a plurality of screws connected with said wedge and extending through longitudinal slots in the wall of said flared tube adapted to be engaged from above for loosening said wedge in said well tube.

et. In a pump, the combination with a well-tube, of a pump cylinder supporting device comprising a tube flaredat its upper end portion, wedges between said flared portion and the well-tube, and means connecting said wedges with said supportingdevice and projecting` slightly beyond the inner surface thereof, said supporting device having a free open passage, adapted to receive a. puinp-rod.

In a pump, the combination with a well-tube, of a pump cylinder supporting device comprising a tube having its upper end portion flared andvhavinglongitudinal slots in its lower portion, a collar mounted on said supporting device and having pins projecting through said slotsfbeyond the inner surface ofthe tube, the inner ends of said pins being a distance apart sullicient to permit the passage of a pump rod bef tween them, and wedges connected with said collar andy adaptedtoengage the well-tube. 6. In a puiiip,flth'e 'combinationwith a Welltube,of afpuiiipc'ylinder tapered at its `said support comprising a wedge adapted to grip the well-tube, yielding means tending to hold said wedge in gripping engagement with the well-tube, and means carried by v Vsaid wedge adapted'to be'actuated from the interior of the Well-tube for loosening the support from engagement with the welltu e.

7. In combination, a well-tube, a tapering tube therein, a collar about said tapering tube, wedge-members securedA to said collar and spaced eircumferentially of the collar in the well-tube, yielding means tending to hold said collar inoperative raised position for causing the wedges to grip the well-tube fory supporting the tapering tube, three er more pins extending inward from said collar adapted to be engaged for forcing said coilar evenly up or down relative to said welltube but adapted to permit the passage of a water-supply pipe through said collar, a tapering packing mounted in the well-tube and .extending into the upper end of said tapering tube, and a cylinder having a tapered lower end extending into said packing and supported thereby upon the taper- Aing tube, said packing serving to make a tight joint between the lower end of said cylinder and said well-tube.

8. pump cylinder supporting device comprising a tube having wedges mounted thereon, a spring on said tube and acting to move said wedges upward, said tube having an internally-tapered portion for receiving a packing and having a free central passage, in combination with a'cyliiider having a tapered lower end fitting in said internallytapered portion of the supporting device and packing between the lower end of the cylinder and the upper end portion of Said tube.

9. The combination of a well-tube having a cylinder secured therein and a check-valve at the lower end portion of said cylinder, of a support for the cylinder adapted to be placedy in'said well-tube at any desiredy deptha spriiig-actuated wedge for securing said support in position in said welltube, and means extending inward from said wedge through the wall of the support adapted to be engaged for-releasing the'support from the Well-tube, said releasing meansA leaving a free open passage for thev nation of a Well-tube, a pump Cylinder fitted therein, a support secured in the well-tube below and supporting said cylinder, said support being secured in the Well-tube by means of Wedge-mechanism adapted to be lightened into operative engagement with he Well-tube, a eheclvalve in the lower Meneses portion of said cylinder, a piston operating in said cylinder, a tube connected with said piston and extending down through said check-valve and said suppo1t,' means eX- tending into said support into close proximity to said tube adapted to be engaged 0n the inside of the support for loosening it from the well-tube, and a cheek-valve above said piston. 

